Close popup after a time - settimeout

Question

I use this code to show my popup automatically and I want to know how to close it automatically after 5 seconds.
$(document).ready(function() {
var id = '#dialog';
//Get the screen height and width
var maskHeight = $(document).height();
var maskWidth = $(window).width();
//Set heigth and width to mask to fill up the whole screen
$('#mask').css({'width':maskWidth,'height':maskHeight});
//transition effect
$('#mask').fadeIn(500);
$('#mask').fadeTo("slow",0.9);
//Get the window height and width
var winH = $(window).height();
var winW = $(window).width();
//Set the popup window to center
$(id).css('top', winH/2-$(id).height()/2);
$(id).css('left', winW/2-$(id).width()/2);
//transition effect
$(id).fadeIn(2000);
//if close button is clicked
$('.window .close').click(function (e) {
//Cancel the link behavior
e.preventDefault();
$('#mask').hide();
$('.window').hide();
});
//if mask is clicked
$('#mask').click(function () {
$(this).hide();
$('.window').hide();
});
});

Answer 1

Modifying an example from Mozilla's developer page on WindowTimers.setTimeout(), call this function from within your existing document.ready function:
delayedAlertClose();
Add these functions outside your document.ready function:
function delayedAlertClose() {
timeoutID = window.setTimeout(popupClose, 5000);
}
function popupClose() {
$('#mask').hide();
$('.window').hide();
}